Propeller device of vertical take-off and landing aircraft
By increasing the motor power and propeller design, including longer blades and roller structures, the problem of insufficient lift of the existing electric vertical take-off and landing aircraft propeller devices is solved, and greater lift output and load capacity increase is achieved.
Patent Information
- Application Number
- CN202411364558.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-01-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The propeller devices of existing electric vertical take-off and landing aircraft produce limited lift, which is difficult to meet the load capacity requirements.
By increasing the motor power, propeller speed, number and length of blades, and adopting a cross ring track and roller structure, the blades roll and rotate along the fixed ring track, generating greater upward lifting force.
It effectively improves the lift of a single propeller device, increases the rotational plane area and air volume, and improves the load capacity of the electric vertical take-off and landing aircraft.
Smart Images
Figure CN119239930A_ABST
Abstract
Description
1. Technical Field
[0001] The propeller device belongs to the technical field of electric vertical take-off and landing aviation equipment production. 2. Background Technology
[0002] The propeller device of the existing electric vertical take-off and landing aircraft has a structure including: blades, transmission shafts, motors, brackets, etc. The blades rotate under the drive of the motor, blowing wind downward to generate upward lift, so that the aircraft rises or falls. The rotation directions of the two adjacent propeller devices and motors are opposite, and both can generate upward lift; the bending angle of the blades on each propeller shaft is fixed and the same, the blade length is short, and the blades on the two adjacent propeller devices are bent in opposite directions and rotate in opposite directions. The lift generated by the rotation of multiple propellers is limited, and the load capacity of the electric vertical take-off and landing aircraft needs to be further improved. III. Summary of the invention
[0003] (I) The technical problem to be solved by this device is: how to increase the lift of a single propeller device of an electric vertical take-off and landing aircraft.
[0004] (II) The technical solution adopted is:
[0005] 1. The overall technical solution is: increase the power of the motor, increase the speed of the propeller, increase the number of blades, increase the length of the propeller blades, install rollers at the end of the propeller blades, let the blades and rollers roll and rotate along a fixed circular track to generate upward lift. The device includes: a motor, a cross-circular track, a turntable, blades and rollers, etc. The device can be divided into two types: a counterclockwise rotating propeller device and a clockwise rotating propeller device, using two motors with the same power and opposite rotation directions. Four of these propeller devices are used on a vertical take-off and landing aircraft. The front two propeller devices can be tilted forward or backward, and the rear two propeller devices are fixed and do not tilt.
[0006] 2. There are two types of cross-ring tracks: one is a fixed cross-ring track, with a drive shaft hole in the center of the cross-ring track. The diameter of the hole is larger than the diameter of the motor drive shaft to facilitate the passage of the drive shaft; motor mounting holes are drilled on the cross around the drive shaft hole to install and fix the motor, and multiple track mounting holes are drilled on a cross frame of the cross-ring track to install and fix the cross-ring track; two fixed cross-ring tracks are installed on a "T"-shaped frame above the tail of the fuselage, symmetrically on the left and right. One is a tilting cross-ring track, with a transmission shaft hole in the center of the cross-ring track. The diameter of the hole is larger than the diameter of the motor transmission shaft to facilitate the passage of the transmission shaft; motor mounting holes are made on the cross around the transmission shaft hole for installing and fixing the motor; a long rotating shaft and a short rotating shaft are installed on the outer side of the track at both ends of a cross frame of the cross-ring track, and bearings are installed on the rotating shafts for suspending the cross-ring track. The cross-ring track can be tilted along the axis of the rotating shaft; gears are installed on the long rotating shafts to mesh with the gears of a small motor, and the small motor controls the deflection direction and angle of the cross-ring track; two tilting cross-ring tracks are suspended on a "T"-shaped frame above the front of the fuselage, symmetrically on the left and right.
[0007] 3. The turntable is circular, with a drive shaft mounting hole in the center and multiple propeller blade mounting holes evenly and symmetrically arranged around it. Multiple propeller blades can be installed on one turntable, and the turntable is installed at the lower end of the motor drive shaft.
[0008] 4. The blade is rectangular, with a blade handle and a shaft at both ends of one long side. A mounting hole is drilled on the blade handle, and a roller is installed on the shaft at the end of the blade. When the blade is installed on the turntable, the axis of the roller shaft is perpendicular to the axis of the turntable drive shaft installation hole and the axis of the drive shaft. The length of the blade is equal to the radius of the cross ring track.
[0009] There are two types of blades: one is bent to the lower left and the other is bent to the lower right relative to the blade handle, with the same bending angle and the same blade length. The blade bent to the lower left is used for a propeller device rotating in a counterclockwise direction, and the blade bent to the lower right is used for a propeller device rotating in a clockwise direction. Multiple blades with the same bending direction can be installed on a turntable, so that two propeller devices equipped with two different blades can both generate downward wind force when rotating in opposite directions, that is, generate upward lift.
[0010] 5. There are two types of motors, one that rotates counterclockwise and the other that rotates clockwise. The counterclockwise motor is installed above the cross-circular tracks at the right front and left rear of the fuselage, and the clockwise motor is installed above the cross-circular tracks at the left front and right rear of the fuselage. The motor drive shaft passes downward through the drive shaft hole, and a turntable is installed below the track and at the lower end of the drive shaft. The turntable is installed with propellers. The propellers that rotate counterclockwise correspond to the counterclockwise motors, and the propellers that rotate clockwise correspond to the clockwise motors. The rollers of the propellers are below the track and correspond to and contact the bottom of the track. When the motor drives the propellers to rotate, the rollers roll along the bottom of the track and blow wind downward, generating upward lift, which acts on the fuselage through the track, driving the fuselage to rise or fall.
[0011] 6. The motor is connected to the power supply, voltage control device and remote control device through wires. Increasing the motor voltage will increase the motor speed and increase the lift generated; reducing the voltage will reduce the speed and reduce the lift generated.
[0012] 7. How to use: Start the four motors to rotate, generate lift, and the drone will take off; the two front propeller devices tilt forward at the same time, blowing air backward and downward, and part of the lift is converted into forward thrust, making the drone fly forward; only tilt the left front propeller device, the drone will turn right, and only tilt the right front propeller device, the drone will turn left.
[0013] (III) Beneficial effects: Compared with the propeller device of the existing electric vertical take-off and landing aircraft, the propeller blade length and the number of blades of a single propeller device are increased, and the effective area of the rotating plane is increased accordingly; the motor power is increased, the rotation speed is increased, the wind volume generated per unit time is increased, and the lift generated by a single device is increased accordingly. The use of multiple propeller devices can effectively increase the load capacity of the electric vertical take-off and landing aircraft.
[0014] (IV) Scope of application: The propeller device provides a propeller device that generates lift for electric vertical take-off and landing aircraft. It is not only applicable to vertical landing drones, but also to helicopters. IV. Description of the drawings Figure 7 , Fig. 9 , Fig.12 In the figure, the curved arrow indicates the rotation direction of the propeller device; Figure 8 , Fig.10 In the figure, the horizontal straight arrow is the tangent direction of the blade rotation, and the vertical arrow is the wind direction.
[0016] Figure 1 Front view of the fixed cross-ring track;
[0017] Figure 2 Front view of the tilting cross-circular track;
[0018] Figure 3 Front view of the turntable;
[0019] Figure 4 Front view of the propeller blade;
[0020] Figure 5 Side view of the lower right bent blade;
[0021] Figure 6 Side view of the lower left bent blade;
[0022] Figure 7 Schematic diagram of the installation structure of the counterclockwise rotating blades, rollers, and turntable;
[0023] Figure 8 Tangential side view when rotating counterclockwise;
[0024] Fig. 9 Schematic diagram of the installation structure of the clockwise rotating blades, rollers, and turntable;
[0025] Fig.10 Side view in tangential direction when rotating clockwise;
[0026] Fig.11 A side view of the structure of a four-blade propeller device;
[0027] Fig.12 Front view of the structure of a four-blade counterclockwise rotating propeller device.
[0028] 1. Cross 2. Motor mounting hole 3. Motor drive shaft hole 4. Track mounting hole 5. Annular track 6. Short shaft 7. Long shaft 8. Paddle mounting hole 9. Turntable 10. Motor drive shaft mounting hole 11. Mounting hole 12. Petiole 13. Paddle 14. Shaft 15. Roller 16. Motor V. Specific implementation methods
[0029] The cross-annular track of the propeller device is divided into fixed and tilting tracks, the rotation direction of the device is divided into counterclockwise and clockwise rotation directions, and the blades are divided into two types.
[0030] 1. Fixed cross ring track: Figure 1 In the invention, a cross frame (1) and a ring track (5) form a cross ring track, a motor transmission shaft hole (3) is punched at the center of the cross of the cross ring track, motor mounting holes (2) are arranged on the cross (1) around the transmission shaft hole, and a track mounting hole (4) is punched on one frame; when in use, the fixed cross ring track is installed below the brackets on both sides of the "T"-shaped frame at the rear of the fuselage, symmetrically on the left and right, and the transmission shaft holes are arranged on the brackets.
[0031] 2. Tilting cross-ring track: Figure 2In the invention, a cross frame (1) and a ring track (5) form a cross ring track, a motor transmission shaft hole (3) is punched at the center of the cross of the cross ring track, and motor mounting holes (2) are arranged on the cross (1) around the transmission shaft hole. A section rotating shaft (6) and a long rotating shaft (7) are installed on the outer side of the ring track (5) at both ends of the cross frame (1), bearings are installed on the long rotating shaft and the short rotating shaft, and a gear is installed on the outer end of the long rotating shaft; when in use, the rotating shaft of the tilting cross ring track is suspended in the bracket below the brackets on both sides of the "T"-shaped frame at the front of the fuselage, and is symmetrical on both sides and can be deflected forward and backward. Two small motors are installed on the "T"-shaped frame, and the gears of the motors are meshed with the gears on the long rotating shaft of the track to control the tilting direction and angle of the tilting cross ring track.
[0032] 3. Figure 3 The rotating disk (9) is circular, a motor transmission shaft mounting hole (10) is arranged at the center, and four sets of blade mounting holes (8) are symmetrically arranged around the mounting hole.
[0033] 4. Figure 4 The blade is rectangular in shape, a mounting hole (11) is arranged on a blade handle (12) at one end, and a rotating shaft (14) is arranged at the other end.
[0034] Right-bend blade: ( Figure 5 ), the blade (13) is bent to the lower right relative to the petiole (12), and is suitable for a propeller device that rotates clockwise.
[0035] Left-bend blade: ( Figure 6 ), the blade (13) is bent to the lower right relative to the petiole (12), and is suitable for a propeller device that rotates counterclockwise.
[0036] 5. Figure 7 In the invention, a roller (15) is mounted on a rotating shaft (14), a blade stalk (12) of a counterclockwise rotating blade (13) is mounted on a rotating disk (9), and four sets of blades and rollers are symmetrically mounted on one rotating disk. The mounting structure is suitable for a propeller device that rotates counterclockwise.
[0037] 6. Fig. 9 In the invention, a roller (15) is mounted on a rotating shaft (14), a blade handle (12) of a clockwise rotating blade (13) is mounted on a rotating disk (9), and four sets of blades and rollers are symmetrically mounted on one rotating disk. The mounting structure is suitable for a propeller device that rotates in a clockwise direction.
[0038] 7. Counterclockwise rotating propeller device: Fig.11 In the embodiment, at the front right side of the fuselage, above the cross ring track on which the counterclockwise rotating motor (16) is installed, the motor transmission shaft passes downward through the transmission shaft hole (3), Figure 7The turntable (9) of the structure is installed at the lower end of the motor transmission shaft. At the rear and left side of the fuselage, a motor (16) rotating in a counterclockwise direction is installed on the cross ring track and above the bracket, and the motor transmission shaft passes downward through the transmission shaft hole (3). Figure 7 The rotating disk (9) of the structure is installed at the lower end of the motor transmission shaft.
[0039] 8. Clockwise rotating propeller device: Fig.11 In the embodiment, at the front and left side of the fuselage, above the cross-ring track on which the motor (16) rotating in the clockwise direction is installed, the motor transmission shaft passes downward through the transmission shaft hole (3), Fig. 9 The turntable (9) of the structure is installed at the lower end of the motor transmission shaft. At the rear and right side of the fuselage, the motor (16) rotating in the clockwise direction is installed on the cross ring track and the bracket. The motor transmission shaft passes downward through the transmission shaft hole (3). Fig. 9 The rotating disk (9) of the structure is installed at the lower end of the motor transmission shaft.
[0040] 9. The motors at the front and left and right sides of the fuselage tilt along with the track, while the motors at the rear and left and right sides of the fuselage do not tilt.
Claims
1. A propeller device for a vertical take-off and landing aircraft, characterized in that: A roller is installed at the end of the propeller blade to allow the blade to roll and rotate along a fixed circular track to generate upward lift. The propeller device can rotate counterclockwise or clockwise.
2. The propeller device for a vertical take-off and landing aircraft according to claim 1, characterized in that: The cross-ring track is divided into a fixed track and a tilting track. A transmission shaft hole is drilled in the center of the fixed track, and motor mounting holes are drilled on the cross around the transmission shaft hole. Multiple track mounting holes are drilled on a cross frame. Two fixed tracks are installed above the tail of the fuselage, symmetrically on the left and right; a transmission shaft hole is drilled in the center of the tilting track, and motor mounting holes are drilled on the cross around the transmission shaft hole. A long rotating shaft and a short rotating shaft are installed on the outer side of the track at both ends of a cross frame, bearings are installed on the rotating shafts, and gears are installed on the long rotating shaft, which meshes with the gears of a small motor. The small motor controls the deflection direction and angle of the cross-ring track. Two tilting tracks are installed above the front of the fuselage, symmetrically on the left and right.
3. The propeller device for a vertical take-off and landing aircraft according to claim 1, characterized in that: The turntable is circular, with a transmission shaft mounting hole in the center and multiple blade mounting holes evenly and symmetrically arranged around it.
4. The propeller device for a vertical take-off and landing aircraft according to claim 1, characterized in that: The paddle blade is rectangular, with a petiole and a rotating shaft at both ends of one long side. A mounting hole is drilled on the petiole, and a roller is installed on the rotating shaft at the end of the paddle blade. There are two types of paddle blades: one is bent to the lower left and is suitable for devices rotating in the counterclockwise direction, and the other is bent to the lower right and is suitable for devices rotating in the clockwise direction. Multiple paddle blades with the same bending direction are installed on a turntable.
5. The propeller device for a vertical take-off and landing aircraft according to claim 1, characterized in that: The counterclockwise rotating motors are respectively installed above the cross-circular tracks at the right front and left rear, the transmission shaft passes downward through the transmission shaft hole, the turntable is installed at the lower end of the transmission shaft, and multiple counterclockwise rotating blades are installed on the turntable. Below the track, the roller corresponds to the circular track, and the propeller device rotates counterclockwise.
6. The propeller device for a vertical take-off and landing aircraft according to claim 1, characterized in that: The clockwise rotating motors are respectively installed above the cross-circular tracks at the left front and right rear, the transmission shaft passes downward through the transmission shaft hole, the turntable is installed at the lower end of the transmission shaft, and multiple clockwise rotating blades are installed on the turntable. Below the track, the roller corresponds to the circular track, and the propeller device rotates clockwise.